Fitzgerald Joseph F, Troncone Ricardo, Vanderhoof Jon A, Young Rosemary J, Iyer Kishore
Department of Pediatrics and Surgery, University of Nebraska Medical Center, Omaha, NE, USA.
J Pediatr Gastroenterol Nutr. 2003 Apr;36(4):491, 501. doi: 10.1097/00005176-200304000-00015.